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2 Sheetss-Sheetl 1, W'. H. H; SISUM.' Crimping Machine.

Patentedv Jan. 4, |881.

(No Model.)

(No Model.) z'sneetg-sneet 2. WQH. H. SISUM. Crimping Machine. No. 236,369. Patented Jan. 4,1881.

` Untoten STaTns FATTLNT Ormea.

WILLIAM H. H. SISUM, OF BROOKLYN, ASSIGNOR TO I-IIMSELF AND ARTE, MAS S. OADY, AND JAMES D. BACON, OF NEW YORK, N. Y.

CRINlPING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 236,369, dated January 4, 1881.

Application filed June 21, 1880.

To all whom it may cncera--` Be it known that I, WTLLTAM H. H. SIsUM, of Brooklyn, in the county ot' Kings and State of New York, have invented certain new and useful Improvements in Orimping-Machines,

of which the following is a specification.

In crimping-machines as ordinarily constructed the jaws between which the leather is forced or carried by the former are provided .elo with grooves or corrngations which extend upward and outward upon each side of the center line of movement of the leather between the jaws. Such grooves or corruga tions are, as commonly formed, nearly paralr5-lcl with the bottom of the jaw, and consequently the leather is often strained and even torn near the center of motion, and in any case the stretching of the leather is not uniformly eected, but is much more severe at zo some points than at others. Another defect incident to such a formation of the grooves or corrugations in the jaws is that oftentimes the grooves or corrugations carry the leather outward from the line of movement so rapidly that the leather cannot accommodate itself to the great inclination of the grooves or corrugations, and, breaking away from the latter, travels across them, and is not sufficiently stretched, but is simply compressed between 3o the jaws and former.

The principal object of my invention is to provide a crimping-machine in which thejaws are so grooved, corrugated, or formed that the leather is subjected to an as near as possible uniform stretching and fulling action as the case may require at all parts, as it is forced between thejaws by theformer, and tearing ofthe leather elfectually prevented. In order to do this I have sought to give the faces of the 4o jaws a surface of such character that the leather adjacent to the line of movement is free to move inward or outward from said line as it is forced from the under to the upper side of the jaw, thereby preventing the undue stretching of the leather.

To this end my invention consists in a jaw for a crimping-machine provided upon its face with upwardly-diverging grooves, which form angles both with the center line of the jaw 5o and with the receiving or bearing edges of the jaw, past which the former first passes, but

(No model.)

which form lesser angles with said center line than with said edgesj It also consists in a jaw for a crimping-machine having that portion of its face adjacent to the center line of movement of the leather provided with projections preferably of lozenge or diamond shape, which are formed by intersecting grooves, and the upwardlydiverging portions of which stretch the leather out- 6o ward upon each side, while the upwardly-converging portions permit the leather to move inward if the stretching action at any point is too severe. Upon each side of that portion of the jaw which is furnished with the lozenge or diamond shaped projections are preferably formed grooves or corrugations extending upward and diverging from the center of movement and parallel, or approximately parallel, with the upwardly-diverging sides of the pro- 7o jections. The upper portion or margin of the face of the jaw is preferably left smooth, so that any impressions left by the lozenge or diamond shaped projections upon theleather may be removed before the completion of the operation of crimping.

The invention also consists in the combination, in a crimping-machine, of two jaws, one of which is movable transversely to its face, a former adapted to be forced between the jaws, 8o means of producing a yielding pressure upon the movablejaw to press it inward, and mech-A anism actuated by the movement of the former to forcethej aw outward against'the said yielding pressure, as the former moves away from the jaws, and released by the movement ot' the former toward the jaws to permit the yielding pressure to force the movable jaw inward.

It also consists in various details of construction and combinations of parts, whereby 9o a simple and effective machine is produced.

In the accompanying drawings, Figure l represents a vertical section of a machine embodying my invention. Fig. 2 represents a vertical section at right angles to Fig. 1. Fig. 3 represents a horizon tal section on the dotted line x m, Fig. 1, and Fig. 4 represents a face view upon a larger scale of one of the jaws dctached.

Similar letters of reference designate correloo sponding parts in all the figures.

A A designate the two jaws of the machine,

which are here represented as stationary. The said jaws are supported by hubs or stems B B' projecting from their backs at a right angle to their faces and cylindrical in form. The hubs or stems B B' are fitted to cylinders or sockets C G', supported by the upright frame D of the machine.

The jaw A maybe termed the fixe l,]`aw, as it remains stationary after being once adj usted; but thejaw A' will be hereinafter termed the movable jaw, inasmuch as it moves forward and back at each operation ofthe machine, in a manner hereinafter clearly described.

E designates ascrew fitted to a screw-threaded hole in the frame D, and connected to the hubl or stem B of the fixed jawA bya cap, a, so as to be free to turn. The screw E is preferably provided with a hand-wheel, E', and by turning the same the jaw A may be adjusted backward and forward to any fixed position.

In connection with the movable jaw A', I employ means for producing a yielding pressure adapted to exert a pressure upon the end of the hub or stem B, and force the jaw inward toward the xed jaw A. Any desirable means may be employed for this purpose. The hub or stem B', for example, might be provided with a suitable packing to make it work airtight within the cylinder or socket C', and liquid or air under pressure employed to force the jaw inward. In the present example of my invention, however, the means employed consists of a spiral spring, G, fitting within the cylinder or socket- U', and pressing against the hub or stem B'. At the back end of the spring is preferably a movable head, G', or plug tting in the cylinder, and adapted to bc forced forward by a screw, G2, which is provided with a hand-wheel, G3, to compress the spring and increase its power.

rI he mechanism for holding the jaw A' against the action of the spring G consists of a bell-crank lever, I-I, hinged atb tothe under side of the cylinder or socket G,and one arm ot which engages with a notch or mortise, b', in the hub or stem B'. By depressing the other arm of said lever', which is done in a manner hereinafter to be described, the jaw A' may be moved back and held against the force of the spring G.

Turning, now, to the movable parts of the machine, I designates the former, adapted to be forced upward between the jaws A A', for crimping the leather. This former may be of any suitable construction, but the one which I prefer to employ is double, and has a iilling of india-rubber, to press the sides or walls thereof outward. The former I, in the present instance, is fixed vto a yoke, I', which is tted to move in vertical guides I2, and in this example of my invention the proper movement is imparted to the yoke I' by a screw, J, fitting a nut, c, in the bottom of the yoke. The lower end of the screw J is supported in a step-bearing, d, and the upper end in a bearing, e, upon the under side of a basin or box,

K, which receives the water and drippings from the wet leather operated upon. Motion, in the present case, is imparted to the screw J by bevel-wheels J' J', shaft J2, and pulleys J3 J3 J3, two of which are loose pulleys, and receiving open and crossed belts; but lany suitable mechanism might be employed in lieu of the above for supporting and operating the former.

L designates a lever or arm fixed to arockshat't, L', supported in bearings f, and provided at or near its outer end lwith a roller, L2, engaging with the yoke I'. The bolt g, which secures this roller to the lever or arm L, tits in a slot therein, whereby provision is afforded for Ythe proper adjustment of the roller. y

Upon the rock-shaft L' is an arm, M, to the end of which is attached a rod, N, which extends upward and is connected to the long arm of the bell-crank lever H. The arrangement of the rock-shaft L with the levers or arms L M and rod N is clearly shown in Figs. 2 and 3.

It will be observed that the former I is here Ashown a-s down in. its lowest position ready to receive the leather, and when in such position the yoke I', acting upon the roller L2, depresses the lever L and the arm M, and through the rod N draws down the long arm of the bell-crank lever H and pushes back the movable jaw A' against the force of the spring G. When, however, the yoke I' rises, the lever L rises by the action of the spring G as fast as the yoke I' permits, and the-roller L2 travels along the inclined under surface of the yoke, the jaw A meanwhile being moved by the action of the spring inward toward the jaw A, as is required, during the operation of crimping, after the upper edge of the former I has entered between the jaws.

O designates a trip-rod, adapted to be shifted by an abutment, t, on the yoke I', striking collars u on the rod as the yoke I' ascends and descends, and connected to the shaft O', so as to oscillate the latter. To an arm, 7L, upon said shaft is connected a rod, t', and as the said shaft 1s oscillated the rod t' is reciprocated and a belt-shifter, of any desirable construction, to which it is connected, isoperated to shift the belts and change the direction of movement of the machine. When the change of direction of movement is effected in this manner the operation of the machine is continuous.

If desirable, a wedge or inclined plane, 7', (see Fig. 2,) maybe attached to the yoke I' in position to act upon a roller, It, fixed in an arm, l,upon the shaft O', and when in the descent of the yoke the incline strikes said roller, the belt-shipper is operated sufficiently to throw both the driving-belts onto the loose pulleys and stop the machine.

To the shaft O' is connected a treadle, O2, (see Fig. 3,) which may be operated by the foot to start the machine after it has been IOO stopped by the wedge j, and while both hands are free to adjust the leather on the former.

Proceeding', now, to an explanation of the particular manner of grooving, corrugating. or forming the faces of the jaws A A', one of which is clearly shown in Fig. 4, the dotted line m designates the central line of movement of the leather, as the latter is forced upward, by the former I, between thejaws. As here represented, the central portion of the face of the jaw, for some distance upon each side of the center line, is covered by a series of elongated projections, n, (here shown as of lozenge ordiamond shapc,') and upon each side of the portion of the jaw covered with the projections n are grooves or corrugations o, which are parallel, or approximately parallel, with the sides of the lower or up wardly-diverging portions of the projections u, orat about the saine angle with the center line, m, as the sides of the projections n. The projections fn, are, indeed, formed by intersecting grooves parallel with the grooves o, and instead of being of lozenge or diamond shape, the projections might be in the form ot' elongated ellipses having pointed ends. The grooves or corrugations form angles both with the center line, on, and with the receiving or bea-ring edge of the jaws, between which the former first passes, and which, in this instance,.are the lower edges, but it will be observed that the inclination of said grooves or corrugations from the center line is very slight, being only about one inch in nine, while the angle which they forni with the bearing or receiving edge of the jaw is far greater. It will be observed that the angle of these grooves or corrugations with the center line is so slight that the leather which is taken up by the grooves is stretched very gradually and uniformly, and there is no tendency for the leather to run out of the grooves and across the intervening spaces. It is also obvious that in case the leather is overstretched by the upwardly-diverging sides of the projections n at any part, such overstretched portion or portions are free to move inward as soon as the upwardly-converging sides of theprojections n are reached.

In ease. anyimpressions should beleft upon the leather by the projections n, I preferably leave the upper margin or portiomp, of the l jaw smooth, so that such impressions may be smoothed out as the leather leaves the jaws, and, if desirable, the portion p may be grooved or corrugated parallel with the upper edge of the jaw.

In lieu of the projections n at the central part of the jaw the face of the jaw across its entire width might be covered with grooves or corrugations extending parallel with the grooves 0, and diverging upon each side of the center line, m m, but'stopping at said line and not crossing or intersecting each other.

The grooves or corrugations a and those first above referred to need not be made at the exact inclination here shown, but in any case they should make a lesser angle with the center line of movement than with the lower edge of the jaw, or, in other words, must be more nearly parallel with said center line than with the lower edge of the jaw, so as to stretch the leather at a right angle to the line of movement and lessen the tendency of the leather to move across the grooves or corrugations.

By my invention I provide a machine of simple construction in which leather of all kinds usually crimped may be crimped without danger of tea-ring or stretching unequally.

What I claim as my invention, and desire to secure by Letters Patent, is

l. A jaw for a crimping-machine provided upon its face with upwardly-divergin g grooves which form angles both with the center line of the jaw and with the receiving or bearing edges of the jaw, past which the former first passes, but which form lesser angles with said center line than with said edges, substantially as and for the purpose specified.

'2. A jaw for a crimping-machine having that portion of its face which is adjacent to the center line of movement of the leather provided with projections and intersecting grooves, substantially as and for the purpose specified.

3. A jaw for a crimping-machine having that portion of its face which is adjacent to the center line of movement of the leather provided with projections and intersecting grooves, and having at each side of said projections grooves or corrugations extending parallel, or approximately parallel, with the upwardly-diverging sides of said projections, substantially as and for the purpose specified.

4. The jaw for a crimping-machine having the lozenge or diamond shaped projections n, the grooves or corrugations o, and the smooth upper portion or margin, p, substantially as speciiied.

5. The combination, in acrimping-machine, of a fixed jaw, a movablejaw, a former adapted to be forced between the jaws, and a device for producing a yielding pressure upon the movable jaw to press it inward toward the lixed jaw, and mechanism operated by the movement ofthe former from the jaws to move the movablejaw outward against the yielding pressure, and released by the upward movement of the former to permit the movement of said jaw inward by said pressure, substantially as specilied.

6. The combination, in a crimping-machine, of two jaws, each provided with a hub or stem projecting from its back, cylinders or sockets into which said hubs or stems are inserted, means for holding one of said jaws in a fixed position, and a spring arranged within the cylinder or socket of the other jaw for pressing said jaw toward the fixed jaw, substan-v tially as specified.

7. The combination of the two jaws A A', provided with hubs or stems B B', cylinders or sockets C C', the screw E, the spring G,

IOO

IOS

IIO

IZO

9. The combination of the yoke I, having au ineline, 7', the larm l, shaft O, arm h, treadle O2, and belt-shipper rod z', all substantially as specified.

XVM. H. H. SISUM.

Witnesses:

E. J. SNOW, J. H. HEDENBRY. 

